CN Atlètic-Barceloneta

{{Infobox sports team

| team = Atlètic-Barceloneta

| color1 =

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| logo = CN Atlètic-Barceloneta.png

| pixels = 190px

| founded = 1992 (1913)

| current =

| league = División de Honor

| history =

| arena = Piscina Sant Sebastià, Barcelona

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| colors = {{color box|#002868}} {{color box|white}}

| colours =

| owner =

| president = Bernat Antràs

| coach =

| manager = Chus Martín

| championships = 1 LEN Champions League
1 LEN Super Cup
1 Spanish Championship
23 Spanish Leagues
20 Spanish Cups
15 Spanish Super Cups

| titles =

| cheerleaders =

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| website = [https://www.cnab.cat/ cnab.cat/]

}}

Club Natació Atlètic-Barceloneta (CNAB) is a Spanish professional water polo club from Barcelona, established in 1913.{{cite web|publisher=CN Atlètic-Barceloneta official website|url=http://www.cnab.cat/es/historia|title=History|language=es|access-date=12 February 2017}}

The club is the result of the merge of Club Natació Atlètic, founded in 1913, and Barceloneta Amateur Club, founded in 1929 and renamed later on as Club Natació Atlètic-Barceloneta (CNAB). The club is located in the coastline neighbourhood of Barceloneta.

Atlètic-Barceloneta is one of the most successful water polo clubs in Spain, having won 23 league titles, 19 national cups and 15 national super cups. The team has also won the LEN Champions League in 2014.